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(N0 Modeli) W. LEGGOTT. TRANSOM LIFTER Patented July 31. 1883.

N. PETERS. Hwmuho n hu. Wnhm UNITED ST TEs PATENT @FFICE.

WILLIAM LEGGOTT, OF BRADFORD, COUNTY OF YORK, ENGLAND.

TRANSOM-LIFTER.

SPECIFICATION forming part of Letters Patent No. 282,334, dated July 31, 1883.

Application filed March 20. iaas. (No model.)

To aZZ whom, it may concern Be it known that I, WILLIAM Lnoeorr, a

subject of the Queen of Great Britain, and re som-lifters or fan-lights in which the transom or fan-light is opened and closed by means of a rack, in combination with a worm operated bya pulley and cord and the object of my invention is to so construct the device that the worm will, not travel too far and get out of gear with the rack, but will be locked when it reaches the end of the rack. This object I attain as hereinafter morefully set forth.

In the accompanying drawings, Figure 1 represents a cross section through the upper portion of a door or window frame, the fan-light being open and fitted with my improved apparatus. Fig. 2 is an enlarged side elevation of my apparatus, partly in section. Fig. 3 is a front view of the grooved pulley, worm, and bracket; and Fig. 4 is a section through line 1 2 in Fig. 3. A

To the top bar of the fan-light I affix the bracket A, to which is secured spindle A, which forms the axle of the worm B and grooved pulley 0, around the latter of which is placed the cord or chain D, for actuating the apparatus. This cord is kept in the groove of the pulley by passing through holes formed in the guard E, thereby bringing the ropes nearer to this specification in the together. The guard E is secured to the spindle A, retaining the worm and grooved pulley in the proper position.

Gearing into the worm Bis the curved rack G,which is jointed to the bracket F, secured to the top railof the window or door frame. Thus by actuating the cord or chain D the fan-light is opened or closed, as desired.

In order to prevent the worm traveling too far and locking when it reaches the end of the curved rack, the outside flange of grooved pulley has a number of proj ections at 0, formed thereon somewhat after the manner of an ordinary catch-box used for disengaging shafts in mill-wright work, WVhen the worm is turned to theend of the rack, one of the projections comes in contact with the end of rack at D, thereby preventing the worm being farther turned and locked withthe teeth of the rack:

I do not desire to claim, generally, the combination of a fan-light with an adjusting rack and worm but l I claim as my invention The combination of a fan-light, pulley, and worm, having projections G, with a rack, G, having an outer end to come into contact with the said projections, substantially as described.

In testimony whereof I have signed my name presence of two subscribing witnesses.

WVILLLAM LEG GOTT.

' Witnesses:

ARTHUR J osEPH TAYLOR, JOHN GILL. 

